How to Play:

1. Fill each cell so no number repeats in any row or column — just like Sudoku.
2. The grid size determines your numbers (a 4×4 grid uses 1–4, a 6×6 uses 1–6, and so on).
3. Each outlined cage shows a target number and a math operation (+, −, ×, ÷).
4. The numbers in a cage must combine using that operation to hit the target.
5. For subtraction and division, order doesn't matter — just use the largest minus or divided by the smallest.
6. Tap a cell to select it, then pick a number.